title Null Directive | Microsoft Docs ms.custom ms.date 11/04/2016 ms.reviewer ms.suite ms.technology cpp-tools ms.tgt_pltfrm ms.topic article dev_langs C++ helpviewer_keywords preprocessor directives, Null null directive preprocessor directives preprocessor, directives ms.assetid df59990f-b420-43f3-b415-5c25493abeee caps.latest.revision 6 author corob-msft ms.author corob manager ghogen ms.workload cplusplus Null Directive The null preprocessor directive is a single number sign (#) alone on a line. It has no effect. Syntax # See Also Preprocessor Directives
